Yarn-carrying device



Dec. 11, 1951 M. M. TAYLOR YARN-CARRYING DEVICE Filed Aug. 19, 1-947Inventor M'MT/IYLOR ZZH MW Attorneys Patented Dec. 11, 1951YARN-CARRYING DEVICE Matthew Michael Taylor, Spondon, near Derby,

England, sssignor to Oelan ese Corporation of America, a corporation ofDelaware Application August 19, 1947, Serial No. 769,400 In GreatBritain August 30, I946 2 Claims. (01. 139-207) is automaticallyinserted into the shuttle to displace the exhausted package.

Weft packages for use in automatic loomsof this type (often known ascop-changing looms") generally comprise weft package supports in theform of a tube or spindle on which the yarn is wound, terminating in aheavy butt having several circumferential metal rings inset therein,which serve to locate the package in relation to gripping means withinthe shuttle adapted to engage and grip the butt. The large numbers ofthese yarn package supports required to carry a reasonable stock ofready-wound weft yarn represent a very considerable capital expenditurewhich is idle in the interval (sometimes considerable) between theexhaustion of a weft package in the loom and the return of the rewoundpackage support to the loom again. In order to reduce this expenditure,detachable butts have been proposed, e. g., for use in connection withmule cops, and in connection with ordinary weft pirns which are wound onslightly tapered cardboard or pressed flbretubes into the base of whichthe detachable butt is screwed. These devices are not required in nearlysuch great numbers as the pirns of yarn that need to be in stock at anymoment, since they can be applied to the yarn packages immediatelybefore the yarn packages are supplied to the loom and are ready forre-use immediately upon exhaustion of the yarn packages in the loom. Thedevices, however, cause a substantial expenditure of time when they arebeing applied to the pim tubes and are somewhat uncertain in use, beingapt to come loose in the shuttle during weaving.

It has now been found advantageous, in automatic weaving, to use inconjunction a weft pirn wound on a pim tube having a small projectingflange at the base thereof and a detachable butt for connection to thebase of each pim. Advantage can be taken of the flange on the pim tubeto secure the pim tube firmly to the butt during weaving by springcatches or other convenient locking means.

According to the present invention, therefore, in automatic weaving onlooms of the cop-changing type, there is employed for the supply of wefta combination comprising a shuttle, a flanged pirn tube adapted to carryweft yarn 2 1 in said shuttle, a detachable butt for said pirn tube,spring means in said shuttle adapted'to grip said butt externally and tosecure it in said shuttle and means for engaging the flange of said pirntube and retaining said pirn tube firmly in attachment to said butt.

The expense associated with a large stock of ready-wound weft packagesis thus considerably reduced, while at the same time the pirns can berapidly and securely fixed to the detachable butts immediately beforeuse on the loom.

The locking means for securing the pirn tube firmly to the butt mayconveniently be provided on the butt itself. Most advantageously thebutt has a short spindle adapted to enter into the bore of the tube forthe purpose of locating the tube with reference to the butt proper. Thespindle may be adapted to flt closely in the bore of the pirn tube, oneor more catches being provided round the face of the butt with which theflange contacts, for the purpose of engaging the flange and securing thetube to the butt. The catch or catches may be yielding in character toallow the flange oi the tube to pass them on attachment to the butt.Preferably, however, thecatches are in the form of rigid hooks and otherprovision is made for their initial engagement with the flange. Thus arigid hook may be provided, adapted to pass through a notch formed inthe edge of the flange, after which a partial turn of the tube securesthe flange under the point of the hook.

By way of example, one arrangement for carrying out the invention willnow be described in greater detail with reference to the accompanyingdrawings in which:

Figure 1 is a perspective view of a detachable butt in accordance withthe invention to which a flanged pim tube is being applied; and

Figure 2 is a plan view of a shuttle containing a pim tube anddetachable butt as shown in Figure 1.

The arrangement illustrated is suitable for use in conjunction withpirns wound on pim tubes made principally of cardboard or compressedfibre, but provided at the base with a metal ferrule, slightly coned toconform to the taper of the pirn tube and carrying an outwardlyextending flange of about 3 8" to wide.

In the arrangement shown in Figures 1 and 2 the pirn tube is indicatedat I and has a notch 2 cut in the flange 3 thereof of a width and depthapproximately equal to the width of the flange. The detachable butt isin the form of a cylindrical member 4 having three rings 5 of springsteel inserted in circumferential grooves extending round the surface ofthe cylinder 4. Extending from theupper face of the cylinder 4 is acentral spindle e adapted to at snugly inside the pirn tube I.Paraileltothespindlelbutclosetothe s acute apex angle of the wedge aradially-extendi ing edge! by means of which the notch 2 inthe flangemay be found and guided into position. Surrounding the spindle l beneaththe point of thehoobl isaspring washer i0. g In use, the pirn is thrustdown over the spindle is I. rotated until the edge 0 flnds thenoteh I,pressed down further against the action of the springwasher llsoastobringtheflangelbelowthe point I of the hook, and then rotated soas the point of the hook. In practice this operation can be performedvery rapidly and with substantially no loss of time. The assembled pirnand detachable base fit into the shuttle II as shown in Figure 2, therings I being engaged by two springs ll fltted in the shuttle, the innerfaces of the springs being notched as at it to receive the rings andlocate the pirn and base. The shuttle is open. as is usual incop-changing looms, both at the top and the bottom so that the assembledweft package can be forced in from the top of the shuttle, displacing anexhausted weft package which is thereby forced out of the bottom of theshuttle. I

I claim:

l. A detachable butt for a flanged pirn tube, to adapt such tube for usein an automatic loom, said butt comprising a body of generallycylindrical shape, a spindle projecting from the end face of said bodyand adapted to fit the interior of the pirn tube and a rigid hookrigidly secured to said body, said hook extending beyond said end 4faeeandinwardstowardseaideplndieandbeing wedge-shaped so as to presentat the acute angleofthewedgearadiallyextendingedgeadaptedtoengageandentes'anotchinthe flange of a pirn tube fltted oversaid spindle. said book being adapted on subsequent turning of saidpirntubetcsecure saidpirntubetosaidbody.

2. A detachable butt for a flanged pirn tube, to adapt such tube for usein an automatic loom. said butt comprising a body of generallycylindrical shape, a spindle projecting from the endfaceofsaidbodrandadaptedtoflttheinterior of the pirn tube. a rigid hookrigidly secured to said body and aspi'inl washer against said faeesurrounding said spindle, said hook extendingbewondsaidendfaceandinwardstowardssaid spindle and being wedge-shaped soas to present extend-- attheacuteangleofthewedgearadially ing edgeadapted to engage and'enter a notch in. to engage the plain part of theflange I beneath 20 the flange of a pirn tube fltted over said spindle.said hook being adapted on subsequent turning of said pirn tube'tosecure said pirn tube to said butt.

' MATTHEW MICHAEL TAYLOR.

REFERENCES CITED The following references are of record in the flle ofthis patent:

UNITED STATES PATENTS Number Naine Date 793,621 Benson June 2?, 1005886,459 Wyman May 5, 1008 2,100,382 Oongdon et a1. Nov. 30, 193'!FOREIGN PATENTS Number Country Date 124,619 Great Britain Apr. 3, 1010288,557 taly Apr. 13. 1928, 268,61! Germany Dec. 23, 1913 318,615Germany Feb. 3, 1020

